224041421 has 2 divisors, whose sum is σ = 224041422. Its totient is φ = 224041420.

The previous prime is 224041417. The next prime is 224041427. The reversal of 224041421 is 124140422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170955625 + 53085796 = 13075^2 + 7286^2 .

It is a cyclic number.

It is not a de Polignac number, because 224041421 - 2² = 224041417 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 224041393 and 224041402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224041427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112020710 + 112020711.

It is an arithmetic number, because the mean of its divisors is an integer number (112020711).

Almost surely, 2^224041421 is an apocalyptic number.

It is an amenable number.

224041421 is a deficient number, since it is larger than the sum of its proper divisors (1).

224041421 is an equidigital number, since it uses as much as digits as its factorization.

224041421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 224041421 is about 14968.0132616189. The cubic root of 224041421 is about 607.3552261608.

Adding to 224041421 its reverse (124140422), we get a palindrome (348181843).

Subtracting from 224041421 its reverse (124140422), we obtain a palindrome (99900999).

The spelling of 224041421 in words is "two hundred twenty-four million, forty-one thousand, four hundred twenty-one".